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の歌声

singing voice

→ の
phrase Rare #32,690
singing voice The の indicates whose singing voice it is. 歌声 specifically refers to the sound or quality of someone's singing voice.
JA: 彼の歌声はとてもきれいです。
EN: His singing voice is very beautiful.

トムの歌声がラジオから流れてきた。

Tom's singing voice came over the radio.

誰の歌声？

Whose singing voice is that?

— 紅夢 (1991)

トムの歌声聞いた？

Did you hear Tom sing?